Larry ordered a set of beads. He received 70 beads, and 30% of them were yellow. How many yellow beads did Larry receive?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!